Melt spinning process for acrylonitrile polymer fiber-three or more stretch stages
US4379113A · kind A · utility
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2References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 9, 1981 |
| Grant date | Apr 5, 1983 |
| Priority date | — |
| Expiry date | Jul 9, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Extrusion of a single phase melt of acrylonitrile polymer and water directly into a steam-pressurized solidification zone and stretching the nascent extrudate in at least three stages while it remains within the solidification zone provides fiber which is readily relaxed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.